spandsp  0.0.6
noise.c File Reference
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <memory.h>
#include "floating_fudge.h"
#include "spandsp/telephony.h"
#include "spandsp/fast_convert.h"
#include "spandsp/saturated.h"
#include "spandsp/noise.h"
#include "spandsp/private/noise.h"

Functions

int16_t noise (noise_state_t *s)
 Generate a sample of audio noise. More...
 
noise_state_tnoise_init_dbov (noise_state_t *s, int seed, float level, int class_of_noise, int quality)
 
noise_state_tnoise_init_dbm0 (noise_state_t *s, int seed, float level, int class_of_noise, int quality)
 Initialise an audio noise generator. More...
 
int noise_release (noise_state_t *s)
 
int noise_free (noise_state_t *s)
 

Function Documentation

◆ noise()

int16_t noise ( noise_state_t s)

Generate a sample of audio noise.

Generate a sample of audio noise.

Parameters
sThe noise generator context.
Returns
The generated sample.

◆ noise_init_dbm0()

noise_state_t* noise_init_dbm0 ( noise_state_t s,
int  seed,
float  level,
int  class_of_noise,
int  quality 
)

Initialise an audio noise generator.

Initialise an audio noise generator.

Parameters
sThe noise generator context.
seedA seed for the underlying random number generator.
levelThe noise power level in dBmO.
class_of_noiseThe class of noise (e.g. AWGN).
qualityA parameter which permits speed and accuracy of the noise generation to be adjusted.
Returns
A pointer to the noise generator context.